The authentication and privacy of a group member is important in multicast communication. This paper proposes a privacy-preserving authenticated group-key management protocol for the Mobile Peer-to-Peer Network （ MP2...The authentication and privacy of a group member is important in multicast communication. This paper proposes a privacy-preserving authenticated group-key management protocol for the Mobile Peer-to-Peer Network （ MP2PN ）. The MP2PN contains some super peers and each super peer controls a subgroup composed of regular peers. An efficient attribute-based signature based on Cipertext-Policy Attribute-Based Encryption （CP-ABE） is proposed and used in this group-key rmnagement protocol to authenticate a peer＇s at- tributes and identity. A peer can be described by a set of attributes or one unique special identity at- tribute. Peers that have some attributes in common can form a group and conmmnicate with each other anonymously and securely. Any super peer can initiate a group and act as a group controller. The group controller can authenticate a peer＇s attributes and identity as well as remove malicious peers. Any peer with attributes that rmtches the access structure can join the group and provide its input to form the group key. The proposed protocol pro- vides backward and forward secrecy. The sinmlation results show that this protocol is applicable for mobile devices and can meet the MP2PN requirements of group communication.展开更多
Attribute-based signature is a versatile class of digital signatures. In attribute-based signature, a signer obtains his private key corresponding to the set of his attributes from a trusted authority, and then he can...Attribute-based signature is a versatile class of digital signatures. In attribute-based signature, a signer obtains his private key corresponding to the set of his attributes from a trusted authority, and then he can sign a message with any predicate that is satisfied by his attributes set. Unfortunately, there does not exist an attributebased signature which is resistance to the quantum attacks. This means we do not have secure attribute-based signature schemes in a post-quantum world. Based on this consideration, an attribute-based signature on lattices,which could resist quantum attacks, is proposed. This scheme employs "bonsai tree" techniques, and could be proved secure under the hardness assumption of small integer solution problem.展开更多
In this paper a new signature scheme,called Policy-Endorsing Attribute-Based Signature,is developed to correspond with the existing Ciphertext-Policy Attribute-Based Encryption.This signature provides a policy-and-end...In this paper a new signature scheme,called Policy-Endorsing Attribute-Based Signature,is developed to correspond with the existing Ciphertext-Policy Attribute-Based Encryption.This signature provides a policy-and-endorsement mechanism.In this mechanism a single user,whose attributes satisfy the predicate,endorses the message.This signature allows the signer to announce his endorsement using an access policy without having to reveal the identity of the signer.The security of this signature,selfless anonymity and existential unforgeability,is based on the Strong Diffie-Hellman assumption and the Decision Linear assumption in bilinear map groups.展开更多
Inspired by the framework of Boyen, in this paper, an attribute-based signature（ABS） scheme from lattice assumption is proposed. In this attribute-based signature scheme, an entity＇s attributes set corresponds to t...Inspired by the framework of Boyen, in this paper, an attribute-based signature（ABS） scheme from lattice assumption is proposed. In this attribute-based signature scheme, an entity＇s attributes set corresponds to the concatenation of a lattice matrix with the sum of some random matrices, and the signature vector is generated by using the Preimage Sampling algorithm. Compared with current attribute-based signature schemes, this scheme can resist quantum attacks and enjoy shorter public-key, smaller signature size and higher efficiency.展开更多
Recently, Wang et al. presented a new construction of attribute-based signature with policy-and-endorsement mechanism. The existential unforgeability of their scheme was claimed to be based on the strong Diffie-Hellma...Recently, Wang et al. presented a new construction of attribute-based signature with policy-and-endorsement mechanism. The existential unforgeability of their scheme was claimed to be based on the strong Diffie-Hellman assumption in the random oracle model. Unfortunately, by carefully revisiting the design and security proof of Wang et alfs scheme, we show that their scheme cannot provide unforgeability, namely, a forger, whose attributes do not satisfy a given signing predicate, can also generate valid signatures. We also point out the flaws in Wang et al.＇s proof.展开更多
基金This paper was supported by the National Natural Science Foundation of China under Grant No. 61073042 the Fundamental Research Funds for the Central Universities under Grant No HEUCF100606 the Open Foundation of Network and Data Security Key Laboratory of Sichuan Province under Crant No 201107.
文摘The authentication and privacy of a group member is important in multicast communication. This paper proposes a privacy-preserving authenticated group-key management protocol for the Mobile Peer-to-Peer Network （ MP2PN ）. The MP2PN contains some super peers and each super peer controls a subgroup composed of regular peers. An efficient attribute-based signature based on Cipertext-Policy Attribute-Based Encryption （CP-ABE） is proposed and used in this group-key rmnagement protocol to authenticate a peer＇s at- tributes and identity. A peer can be described by a set of attributes or one unique special identity at- tribute. Peers that have some attributes in common can form a group and conmmnicate with each other anonymously and securely. Any super peer can initiate a group and act as a group controller. The group controller can authenticate a peer＇s attributes and identity as well as remove malicious peers. Any peer with attributes that rmtches the access structure can join the group and provide its input to form the group key. The proposed protocol pro- vides backward and forward secrecy. The sinmlation results show that this protocol is applicable for mobile devices and can meet the MP2PN requirements of group communication.
基金the National Natural Science Foundation of China(Nos.61133014 and 60903189)
文摘Attribute-based signature is a versatile class of digital signatures. In attribute-based signature, a signer obtains his private key corresponding to the set of his attributes from a trusted authority, and then he can sign a message with any predicate that is satisfied by his attributes set. Unfortunately, there does not exist an attributebased signature which is resistance to the quantum attacks. This means we do not have secure attribute-based signature schemes in a post-quantum world. Based on this consideration, an attribute-based signature on lattices,which could resist quantum attacks, is proposed. This scheme employs "bonsai tree" techniques, and could be proved secure under the hardness assumption of small integer solution problem.
基金supported by the National Nature Science Foundation of China under Grant No.10990011the National Science Foundation of US under Grant No.CCF-0725340+1 种基金the National Development and Reform Commission under the project of "A Monitoring Platform for Web Safe Browsing"China Next Generation Internet CNGI Project under Grant No.CNGI-09-01-12
文摘In this paper a new signature scheme,called Policy-Endorsing Attribute-Based Signature,is developed to correspond with the existing Ciphertext-Policy Attribute-Based Encryption.This signature provides a policy-and-endorsement mechanism.In this mechanism a single user,whose attributes satisfy the predicate,endorses the message.This signature allows the signer to announce his endorsement using an access policy without having to reveal the identity of the signer.The security of this signature,selfless anonymity and existential unforgeability,is based on the Strong Diffie-Hellman assumption and the Decision Linear assumption in bilinear map groups.
基金Supported by the National Natural Science Foundation of China(61173151,61472309)
文摘Inspired by the framework of Boyen, in this paper, an attribute-based signature（ABS） scheme from lattice assumption is proposed. In this attribute-based signature scheme, an entity＇s attributes set corresponds to the concatenation of a lattice matrix with the sum of some random matrices, and the signature vector is generated by using the Preimage Sampling algorithm. Compared with current attribute-based signature schemes, this scheme can resist quantum attacks and enjoy shorter public-key, smaller signature size and higher efficiency.
基金partially supported by the National High Technology Research and Development 863 Program of China underGrant No.2011AA010803the National Natural Science Foundation of China under Grant Nos.61100225, 61202450+1 种基金the funding of Science and Technology on Information Assurance Laboratory (KJ-13-02)the Key Scientific and Technological Project of Henan Province of China under Grant No. 122102210126
文摘Recently, Wang et al. presented a new construction of attribute-based signature with policy-and-endorsement mechanism. The existential unforgeability of their scheme was claimed to be based on the strong Diffie-Hellman assumption in the random oracle model. Unfortunately, by carefully revisiting the design and security proof of Wang et alfs scheme, we show that their scheme cannot provide unforgeability, namely, a forger, whose attributes do not satisfy a given signing predicate, can also generate valid signatures. We also point out the flaws in Wang et al.＇s proof.
